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What is the performance of the "lightning killer" sarin with fruit fragrance?
Sarin, scientific name isopropyl methylphosphonate, foreign code GB. It is a colorless and flowable liquid with a faint fruity smell. Its explosion stability is much better than that of tower collapse, and its toxicity is 3~4 times higher than that of tower collapse. Because of its low boiling point and high volatility, it is easy to cause battlefield killing concentration, but it lasts for a short time and belongs to temporary poisoning. Sarin is mainly respiratory poisoning. Exposure to toxic air with a concentration of 0.2~2 μ g/L for 5 minutes can cause mild poisoning, with symptoms such as pupil constriction, dyspnea, sweating and salivation, and can lose combat effectiveness for 4~5 days. If the action time exceeds 15 minutes, it may be fatal. When the concentration reaches 5~ 10 μ g/L, it can be poisoned or even died after 5 minutes of contact.

Sarin was discovered by Dr Schroeder. 1939, Dr. Schrade began to study fluorine-containing compounds with a carbon-phosphorus bond (C-P) in the most advanced laboratory provided by the German military at that time. As a result, he found isopropyl methylphosphonate, which is more toxic than tabun (a pesticide synthesized by the doctor and used by the Germans as a chemical weapon). Dr. Schrade named it "Sarin", which is the initial capital combination of the names of four key people involved in the development of this poison. The doctor thought that this compound had great potential as a military poison, so he immediately sent it to the Chemical War Bureau of the Ordnance Department for identification, and soon began the development work. However, great difficulties were encountered in organizing the production of this poison. The reason is that fluorination with hydrofluoric acid is always inevitable in the last step of synthesizing poisons, and the corrosion problem must be solved when fluorination is carried out. Therefore, corrosion-resistant materials such as timely and silver are used in poison factories in Stopan and Munster. Finally, a satisfactory process was worked out, and a large-scale production plant was established in Falkenhagen in September 1943. However, when the Soviet army launched a large-scale attack on Germany, the factory had not yet been completed and put into production. So by the end of World War II, only a small amount of sarin was actually produced.